Final answer:
While none of the options directly match the study's content, tattoos are linked to personal preferences and emotions, suggesting option a is closest. Tattoos have been used for expression across cultures and ages, with no indication of being most popular in those 65 and older.
Step-by-step explanation:
None of the statements a, b, c, or d provided directly corresponds to the information available from the study. However, based on the detailed information, it seems that tattoos have historically been and continue to be a form of expressing personal preferences, emotions, community membership, and aesthetic tastes. Tattoos have been a part of human culture for thousands of years and are not confined to a specific age group.
The practice of tattooing has been found in various cultures, from Polynesian tribes to Maori warriors and American sailors, supporting the idea that tattoos are linked to identity, personality, status, and group affiliation. The prevalence among different age groups varies, but there is no indication that they are most popular among people aged 65 and older. Therefore, while none of the provided answer options are entirely accurate, option a is closest to the spirit of the provided references.